Thank you for posting this in Microsoft Q&A.
As I understand you are migrating SAML ap from third part IDP to Entra ID. Currently in old IDP SAML app is using NAMEID format as Transient. But in Entra ID you do not have any option to configure this.
This is a default behavior in Entra ID. Below are the NameID formats that are present in Entra ID dropdown while configuring SAML application,
Transient nameID
is also supported, but isn't available in the dropdown and can't be configured on Azure's side. To learn more about the NameIDPolicy
attribute, see Single sign-On SAML protocol.
You can also refer below article for the same,
https://learn.microsoft.com/en-us/entra/identity-platform/saml-claims-customization#nameid-format
For now, there is no option to configure NameID as Transient for SAML application claims drop down.
However, you can submit your feedback in our Azure feedback portal and this channel is directly monitored by our PM's.
https://feedback.azure.com/d365community/forum/22920db1-ad25-ec11-b6e6-000d3a4f0789
Let me know if you have any further questions.
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